渐显动态公告窗口

<style type="text/css"> .anylinkcss{ position:absolute; visibility: hidden; border:1px solid black; border-bottom-width: 0; font:normal 12px Verdana; line-height: 18px; z-index: 100; background-color: #E9FECB; width: 205px; } .anylinkcss a{ width: 100%; display: block; text-indent: 3px; border-bottom: 1px solid black; padding: 1px 0; text-decoration: none; font-weight: bold; text-indent: 5px; } .anylinkcss a:hover{ /*hover background color*/ background-color: black; color: white; } </style> <script language="javascript"> //more javascript from var disappeardelay=250 //menu disappear speed onMouseout (in miliseconds) var enableanchorlink=0 //Enable or disable the anchor link when clicked on? (1=e, 0=d) var hidemenu_onclick=1 //hide menu when user clicks within menu? (1=yes, 0=no) /////No further editting needed var ie5=document.all var ns6=document.getElementById&&!document.all function getposOffset(what, offsettype){ var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop; var parentEl=what.offsetParent; while (parentEl!=null){ totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop; parentEl=parentEl.offsetParent; } return totaloffset; } function showhide(obj, e, visible, hidden){ if (ie5||ns6) dropmenuobj.style.left=dropmenuobj.style.top=-500 if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover") obj.visibility=visible else if (e.type=="click") obj.visibility=hidden } function iecompattest(){ return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body } function clearbrowseredge(obj, whichedge){ var edgeoffset=0 if (whichedge=="rightedge"){ var windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15 dropmenuobj.contentmeasure=dropmenuobj.offsetWidth if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure) edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth } else{ var windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18 dropmenuobj.contentmeasure=dropmenuobj.offsetHeight if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure) edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight } return edgeoffset } function dropdownmenu(obj, e, dropmenuID){ if (window.event) event.cancelBubble=true else if (e.stopPropagation) e.stopPropagation() if (typeof dropmenuobj!="undefined") //hide previous menu dropmenuobj.style.visibility="hidden" clearhidemenu() if (ie5||ns6){ obj.onmouseout=delayhidemenu dropmenuobj=document.getElementById(dropmenuID) if (hidemenu_onclick) dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden'} dropmenuobj.onmouseover=clearhidemenu dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)} showhide(dropmenuobj.style, e, "visible", "hidden") dropmenuobj.x=getposOffset(obj, "left") dropmenuobj.y=getposOffset(obj, "top") dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px" dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px" } return clickreturnvalue() } function clickreturnvalue(){ if ((ie5||ns6) && !enableanchorlink) return false else return true } function contains_ns6(a, b) { while (b.parentNode) if ((b = b.parentNode) == a) return true; return false; } function dynamichide(e){ if (ie5&&!dropmenuobj.contains(e.toElement)) delayhidemenu() else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget)) delayhidemenu() } function delayhidemenu(){ delayhide=setTimeout("dropmenuobj.style.visibility='hidden'",disappeardelay) } function clearhidemenu(){ if (typeof delayhide!="undefined") clearTimeout(delayhide) } </script> <!--第一个链接和菜单 --> <a href="" onClick="return clickreturnvalue()" onMouseover="dropdownmenu(this, event, 'anylinkmenu1')">网页特效</a> <div id="anylinkmenu1" class="anylinkcss"> <a href="">图形图像</a> <a href="">鼠标事件</a> <a href="">时间日期</a> <a href="">导航菜单</a> <a href="">窗体变化</a> <a href="">表单按钮</a> <a href="">特殊脚本</a> <a href="">游戏娱乐</a> </div> <!--第二个链接和菜单 --> <a href="" onClick="return clickreturnvalue()" onMouseover="dropdownmenu(this, event, 'anylinkmenu2')">网络学院</a> <div id="anylinkmenu2" class="anylinkcss" style="width: 150px; background-color: lightyellow"> <a href="">网页制作</a> <a href="">网络编程</a> <a href="">图形图像</a> <a href="">多媒体制作</a> <a href="">网站建设</a> <a href="">操作系统</a> </div>